Research Article

Evaluation of bioaccumulation and toxicity of Congo Red on Pseudochloris wilhelmii and Daphnia magna

Volume: 34 Number: 1 June 20, 2025
EN

Evaluation of bioaccumulation and toxicity of Congo Red on Pseudochloris wilhelmii and Daphnia magna

Abstract

Congo Red, which may have allergic, carcinogenic and mutagenic effects for organisms used in textiles and in biochemistry and histology for dyeing microscopic media, is an organic pollutant that causes environmental concerns. This study shows that the acute toxic effects of Congo Red on two different aquatic organisms (Pseudochloris wilhelmii and Daphnia magna). The toxic effects of increasing dye concentrations on the growth of Pseudochloris wilhelmii were demonstrated by algal inhibition test. The maximum chlorophyll (a+b) concentration was determined as 0.445 µg/mL at a dye concentration of 5.38 mg/L after 72 hours of exposure. This value decreased to 0.218 µg/mL at 28.46 mg/L dye concentration, indicating a decrease of approximately 50%. For Daphnia magna, it was also demonstrated that acute toxic effects reached their highest level with increasing concentrations and duration (72h LC50: 89.91 mg/L). This study shows that the introduction of Congo red into ecosystems could cause stress on the environment and organisms.

Keywords

Supporting Institution

TÜBİTAK

Project Number

122Z742

Ethical Statement

The microorganism used in this study was isolated within the scope of TUBITAK project No 122Z742

Thanks

The microorganism used in this study was isolated within the scope of TUBITAK project No 122Z742

References

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Details

Primary Language

English

Subjects

Algology , Industrial Biotechnology (Other)

Journal Section

Research Article

Publication Date

June 20, 2025

Submission Date

March 12, 2025

Acceptance Date

May 5, 2025

Published in Issue

Year 2025 Volume: 34 Number: 1

Cited By

Communications Faculty of Sciences University of Ankara Series C Biology licensed under a Creative Commons Attribution 4.0 International License.

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